Aging resistant performance testing method of high-temperature vulcanized silicone rubber based on thermo-oxidative aging
A high-temperature vulcanization and thermal-oxidative aging technology, applied in measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problems of high equipment requirements, high cost, long time consumption, etc., and achieve a high degree of accuracy, cost savings and resources, the effect of shortening the test time
Inactive Publication Date: 2018-03-27
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
View PDF4 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] Although this method can more realistically simulate the operating environment of insulators, the disadvantage is that it takes a long time, requires high experimental equipment, and the cost is correspondingly high
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0031] A method for testing the aging resistance of high-temperature vulcanized silicone rubber based on thermo-oxidative aging, the specific steps are as follows:
[0032] 1S Cut out two block samples 1 and 2 of the same size from the silicone rubber to be tested, and measure the mass m of samples 1 and 2 1 and m 2 , the density ρ was measured by the drainage method 硅橡胶 ;
[0033] The specific steps of the drainage method measurement are as follows:
[0034] 1.1S measure the original mass w0 of the sample;
[0035] 1.2S Use a scalpel to make a "one" incision in the middle of the sample, and the depth of the incision is about 1 / 2 of the sample;
[0036] 1.3S Place a beaker on a precision balance, filled with distilled water, the depth of which is not higher than the height of the sample, wind one end of a thin wire and fix it on the glass rod, and fix the other end in the "one" incision of the sample; the glass rod The length can be cross-armed on the top of the side wall...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides an aging resistant performance testing method of high-temperature vulcanized silicone rubber based on thermo-oxidative aging. The method comprises the following specific steps:1, cutting to-be-tested silicone rubber into a block sample 1 and a block sample 2 which are same in specification, measuring mass m1 of the sample 1 and mass m2 of the sample 2, and performing measurement by virtue of a drainage method to obtain the silicone rubber of which the density is rho; and 2, soaking the sample 1 in toluene to be fully swollen and then performing measurement to obtain mass m1', putting the sample 2 in a high-temperature air dry oven, performing constant-temperature heating for 720 hours in an aerobic environment with the temperature of 200 DEG C, and soaking the sample 2 in toluene to be fully swollen and then performing measurement to obtain mass m2'. The testing method provided by the invention has the advantages that the testing time can be greatly shortened, arelatively accurate assessment result can be obtained, the cost and resources can be saved, and more organizations can perform self-detection and comparison on silicone rubber products of networked composite insulators; and in addition, because the crosslinking density is closely related to the aging degree of the silicone rubber, by adopting the crosslinking density as a characteristic parameter, the accuracy is high.
Description
technical field [0001] The invention relates to the technical field of material performance testing, in particular to a method for testing the aging resistance of high-temperature vulcanized silicone rubber based on thermo-oxidative aging. Background technique [0002] Silicone rubber materials are widely used in the power grid as external insulation materials for various electrical equipment. Among them, high-temperature vulcanized silicone rubber needs to be vulcanized at high temperature (110°C to 170°C), and has a high degree of polymerization and a relatively high degree of crosslinking. HTV silicone rubber has excellent hydrophobic properties, mechanical properties and electrical properties, and is widely used in the manufacture of composite insulator sheds and sheaths. However, there are certain differences in the high-temperature vulcanized silicone rubber formulations, raw materials, and production processes used in each line of the power grid. After a period of op...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
Inventor 韦晓星徐驰卢文浩陈灿刘婉莹贾志东王奇楚金伟
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID